Gate for leers, ovens, and the like



R. B. STUCKEY GATE FOR LEERs, ovENs., AND THE LIKE July 24,1928.

Filed Feb. 13, 192s gmx/nin Patented `uly 24, 17928".

UNITED STATES PATENT.' OFFICE.

y ROBERT B. STUCKEY, F BUGYRUS, OHIO, ASSIGNOR TO W. A. RIDDELL COMPANY,OF

BUCYIRUS, OHIO, A CORPORATIONOF OHIO.

GATE FOR LEERS, OVENS, AND THE LIKE'.

Application led February 13, 1928. Serial No. 253,840.

My' invention has for its object to provide a gate, or port, for theintroduction ofV material into kilns, hardening cylinders, leers, andthe'like, wherein the material 1s 8 to be treated' or operated upon,while in connement, to produce desired modifications, physical orchemical, in the material. Thus, the invention lmay be applied to agreat variety of uses, its particular object 10 being to provide a gatefor hardening cylinders, kilns, and the like, having dimensionssufficiently large for permitting the material to be loaded on cars, ortrucks, and conveyed into the construction that is closed by the gate,the gaterbeing so formed that it may be opened by an inward movement ofthe gate to prevent danger of being blown or forced outward withtheconsequent risk to the operators of the apparatus utilizing 80 thegate. The invention also provides means for readily securing the gate inits closed position and for swinging the gate to open it. The inventionhas many. other features and `advantages which will appear from the '15examination ofthe drawings forming a part hereof and the descriptionhereinafter.V

The invention may thus be embodied in constructions' of different forms'and used for a variety of purposes. To illustrate a 3'0 practicalapplication of the invention, I have selected agate construction of ahardening cylinder as an example of the various constructions thatembody the invention, and shall describe it hereinafter. The structureselected, as an example, Vis shown in the accompanying drawings.

Fig. 1 is a front view of the hardening cylinderl head. 'Fig Qfis a viewof the vertical section through the cylinder head when 40 the gate visopen. Fig. 3 is a view of a section taken on the plane of therline 3-3indicated in Fig. l wherein the gate is shown as closed. Heretofore,gates have been used for openying' and closing hardening cylinders foryreceiving cars lad'ened with material that is to be subjectedto a highpressure in the treatment of the material, as, for example, sand-limebrick. Such gates, however, are

'50 ordinarily' so constructed that they' are opened outward, but, as iswell known in connection with suchf structures, there is always presentthe danger of blowing the gate from the cylinder.4 In the form of contheescape of gases or vapor.

struction shown in the drawings, the gate is opened inwardly and,consequently, the cylinder may be provided with a flanged member thatengages the outer surface of the gate along its peripheral edge portionand thus the gate, when in closed position', will be held againstoutward movement by a fixed part of the structure of the cylinder whichwill absolutely prevent outward movement of the gate. This will reducethe numberl of fastening bolts forsecuring the gate in its closedposition and eliminate the danger of blowing out while the fasteningbolt-s are being unfastened, since the internal pressure on the gatewill automatically aid in sealing the interior of the furnace torprevent the escape of gas or steam| according to the character of theprocess to which the material is subjected when contained within thecylinder.

In the form of construction shown in the drawings, the cylinder l, whichmay be of any length, such as from 40 to 10() feet, is

providedwith a track 2 for receiving cars on which the material, that isto be subjected to a pressure' of-50 to 100 pounds, is conveyed v intoor through the cylinder, whereupon the gate is closed while the materialis subjected to the desired agents under the required pressure: The gate3 is pivoted on a bracket 4 located in the head 5 of the cylinder and ati,a point spaced a short distance from the entering port of the head. Inorder that the gate 3 may be located within the head 5 of the cylinder,and in order to economizethe vspace within the cylinder, the head 5 maybe'madey slightly larger than the body of the cylinder. Thus, the headmay be formed by a flaring rib 6 having suitable flanges for connectingthe rib 6 to the sheeting that forms the body of the cylinder and to thesheeting that forms the body of the head of the cylinder. Also, aflanged rib 7 isconnected to the-forward edge of the sheeting that formsthe body of the head of the cylinder. It has a flanged portion thatextends inwardly for. engagingvthe outer surfaceof the ,gate

for efficiently sealing the gate to prevent the head, which forms theframe of the port, is providedv with an inwardly extending vridge 8. Theinner. surface of theridge 8 yis provided with av channel 9. The gate 3The rib 7A of formed angular interiitting surfaces thatv coact to extendthe sealing area about the periphery of the gate 3; lt desired, asuitable packing material 17 maybe located in the channel 9 so that whenthe gate 3 is drawn or pressed against the frame' of the" port, theulterior will completely sealed as against the escape ot vany gas orvapor a that may be introduced or formed in thev cylinder. l

The frame 7 of the port is provided with a plurality of slotted bosses20 thatv are adapted to receive the bolts 2l, while the gate 3V isprovided with a channel 22 and af plurality of slotted Vbosses 23 thatextend into ther channel 22. The dimensions oli the channel, 22 are suchthat the; heads of the bolts 2l. may be inserted into the slots, formedin the bosses 23 so as to engage the inner surfaces of the bosses 23 andwhenI the nuts 24 are secured onto the ends of the bolts 2l, pl-aced inthe bosses 2O and 23, the gate 3' may be tightly drawn against the frame7 of the port and thus the'` port will bie sealed as against the escapeolf material,

In order that the gate 3` may bel not only rotatably swung into closedor into opened positions and drawn into its tightly sealed position, thegate 3 is provided with a pair of brackets '30 on its inner side and thebrackets 3 0 are provided with slots ,3l in which flanged rollers 32 arelocated. The flanged rollers 32 are rotatably supported on the rod 33that is supported in the bracket 4 which is mounted onthe inside of thehead. Thusthe gate 3 may be lifted from its open position by swingingthe gate on the rollers 32 and also the gate may be moved to its finwardly closed or sealing relation to the frame 7 of the port bydrawing the gate 3 forward so that theridge 16 will engage the packingmaterial or enter theslot 17 when it is drawn by the nuts 21.

`Inorder to raise the gate 3, asuitable lifting windlass may be used.The gate 3 may be provided with an eye 35 that may be engaged by a hookand cable 36. The cable may be passed over a suitabley drum 37 that.i'sjsutably supported on the trame 7 of the rvport. rlhe drum 37 may berotated by any suitable mechanism, such as the worm wheel 38 that isoperated by a suitable worm connected y to a` shaft 39 Ahaving the handwheel 40 for rotating theworm, and, byreduced motiomrotatingfthe drum37. When the gate has been lifted by means ofthe windlass, or othersuitable mechanism,

:the lowerend may be manually `drawn intothe sealing position, the lowerend being l V.shifted over the rollers 32 until the bolts may beinsertedyin position in the lslotted bosses formed integrally with the frame 7and with the gate. Whereupon, the bolts Lenses may -be tightened downVandy thus the gate will ,be tightly sealed to close the cylinderagainstthe escape of gases or vapor.

In order to provide 'for the continuation of the tracks 2, to enable themovement of the cars over thegate 3 when it is in open position, rails4l .extend across its outer face and short' extensions of the tracks maybe l located intermediate the ends of the rails 41 and the tracks2,"l'ocated within the cyl- 75 i.nder,an-d` the tracks that lead uptothe t entrance er port ot the cylinderH Thesereplaceableparts maybesecuredin any suite able manner in ord-er that the cars may be movedinto and out of the cylinder, or, if desired, through the'opposite endof the cylinder which would be, preferably, con-y structed in a similarmanner that the head, 1 described above and 'illustrated in the.drawings, is constructed.

lclaim:` l. A gate forhardening lcylindersand[the like, compris-ing amovable. gate. member, means for pivotally and .sl-idably supporting oneend o the gate member andlocated on theinside of the cylinder, ,.a-rame'tor engaging the outside of the gate member, and means for drawingthe Vgate .member against the trame. t i

2. ln a gate for hardening Icylinders.and the like, a .movable gatemember' located on the inside el' the 'cylinder and having. a channel, aframe for engaging-the outside tace of theygate exterior :toi thechannel, the gate member and the lframe havingsubstan-l tiallylregistering vrslotted bosses, i andiY bolts located inthe slotted bosesIfor drawing-:the

Vgate member against the frame4 i 3.' In agate member for ha .-rdeningcyl inders and the like, a movable gate memberV L05 located lon theinside of thecylinder,.;a flanged member for eng a,-.: fing the outsidetace of the gate, thejgatemember andthe flangedV members havingregistering ,channels and ridges for sealingthe interior ofthewcylinder, and means for drawing thega-te mem- -ber against theflanged member. j-

4. A gate for hardening cylinders and the like, comprising a vmovablegate' member, means for pivotallyy and `slida-bly supporting one end ofthe gate member vand located-on the inside lof the cylinder, a tramefor-enf gaging the outside of the gate member-,the gate memberhaving aslot, andftherame and the gate vmemberk having slotted-bosses and boltsinterconnecting the slotted bosses for drawing thefgate member againstthe frame. y Y, 5. lIn a gate member for hardeningcylin.F ders and thelike, comprising a movable vgate 125 member, means forpivotallysupportingone end of the gate member, rail tracks located onthe lace` of the gate member, means for lowering the gate member to asubstan- 6. A gate member for hardening cylinders and the like, acylinder having rail tracks, a movable gate member for closing thecylinder and having tracks on its outside surface adapted to registerwith the tracks in the cylinder When the cylinder is opened, the-cylinder having a frame for engaging the face of the gate member whenthe cylinder is closed.

7 A gate member for hardening cylinders and the like, a cylinder havingrail tracks, a movable gate member for closing the cylinder and havingtracks on its outside surface adapted to register with the tracks in thecylinder when the cylinder is opened, the cylinder having a flangedmember for engaging the face of the gate member when the cylinder isclosed, the gate member having a channel, bosses and the gate memberhaving slotted bosses located in the channel and registering with theslotted bosses of the flanged member, and bolts for drawing the gatemember against the flanged member When the cylinder is closed.

In witness whereof I have hereunto signed my name to this specification.

ROBERT B. STUCKEY.

the flanged member having slotted Y

